Objective To optimize the matrix prescription of Xiao'er Jianpi Wentong plaster. Methods We Used single factor experiment with central composite design-response surface method, and took peeling strength as the quantitative index, together with adhesive ability, formability, appearance as indexes, to optimize matrix prescription. Results The optimal ratio of the matrix was as follows: gelatin-PVPK30-sodium polyacrylateglycerin(4.0∶2.08∶5.16∶24). Conclusion The optimal matrix has good adhesion, appearance, an...